List of asteroid close approaches to Earth in 2017
{{Short description|none}}
class="infobox" style="width: 250px;"
|style="text-align:center"| Asteroids which came closer to Earth than the Moon in 2017 by time of discovery |
{{#invoke:Chart
|pie chart |percent = true |radius = 125 |slices = ( 23 : After closest approach : red ) ( 6 : < 24 hours before : yellow ) ( 24 : up to 7 days before : lightgrey ) ( 1 : > one week before : green ) ( 0 : > 7 weeks before : turquoise ) ( 1 : > one year before : blue ) }} {{Infobox | title = Other years | caption = Years | below = 2015, 2016, 2017, 2018, 2019 }} |
Below is the list of asteroid close approaches to Earth in 2017.
Timeline of known close approaches less than one lunar distance from Earth in 2017
A list of known near-Earth asteroid close approaches less than 1 lunar distance ({{convert|0.0025696|AU|km mi|abbr=on}}) from Earth in 2017, based on the close approach database of the Center for Near-Earth Object Studies (CNEOS).{{cite web |url=https://cneos.jpl.nasa.gov/ca/ |title=NEO Earth Close Approaches |publisher=NASA/JPL CNEOS |access-date=27 February 2025 }}
For reference, the radius of Earth is approximately {{convert|0.0000426|AU|km mi|abbr=on}} or 0.0166 lunar distances.
Geosynchronous satellites have an orbit with semi-major axis length of {{convert|0.000282|AU|km mi|abbr=on}} or 0.110 lunar distances. In 2017, four known asteroids have traveled nearer than this: 2017 GM, 2017 UJ2, 2017 EA, and 2017 WE30. Unconfirmed asteroids YU95BEF, P10ELNY and A104Vqx probably have traveled nearer, but knowledge of their orbits is too poor to be sure.
The CNEOS database of close approaches lists some close approaches a full orbit or more before the discovery of the object, derived by orbit calculation. The list below only includes close approaches that are evidenced by observations, thus the pre-discovery close approaches are only included if the object was found by precovery.
This list and relevant databases do not consider impacts as close approaches, thus this list does not include any of the 29 objects that collided with Earth's atmosphere in 2017, none of which were discovered in advance, but were observed visually or recorded by sensors designed to detect detonation of nuclear devices.[https://cneos.jpl.nasa.gov/fireballs/ NASA.gov]
{{legend0|#ff9999|border=1px solid #ff9999|Rows highlighted red indicate objects which were not discovered until after closest approach}}
{{legend0|#ffff99|border=1px solid #ffff99|Rows highlighted yellow indicate objects discovered less than 24 hours before closest approach}}
{{legend0|#99ff99|border=1px solid #99ff99|Rows highlighted green indicate objects discovered more than one week before closest approach}}
{{legend0|#99ffff|border=1px solid #99ffff|Rows highlighted turquoise indicate objects discovered more than 7 weeks before closest approach}}
{{legend0|#bbccff|border=1px solid #bbccff|Rows highlighted blue indicate objects discovered more than one year before closest approach
(i.e. objects successfully cataloged on a previous orbit, rather than being detected during final approach)}}
|-
| 2017-09-03 || 2017-08-31{{cite web | url=https://minorplanetcenter.net/db_search/show_object?object_id=2017+QB35 | title=IAU Minor Planet Center }}|| {{mp|2017 QB|35}} || {{convert|0.00238|AU|km mi|abbr=on}} ||align="center"| 0.928 ||align="center"| 3.7–8.2 ||align="center"| 29.3{{cite web |url=http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2017QB35;cad=1#cad |title=JPL Small-Body Database Browser: (2017 QB35) |type=last observation: 2017-09-02}} ||
|- bgcolor="#ff9999"
| 2017-09-14 || 2017-09-18{{cite web | url=https://minorplanetcenter.net/db_search/show_object?object_id=2017+SQ2 | title=IAU Minor Planet Center }}|| {{mp|2017 SQ|2}} || {{convert|0.00133|AU|km mi|abbr=on}} ||align="center"| 0.517 ||align="center"| 18–41 ||align="center"| 25.8{{cite web |url=http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2017SQ2;cad=1#cad |title=JPL Small-Body Database Browser: (2017 SQ2) |type=last observation: 2017-09-20}} ||
|-
| 2017-09-20 || 2017-09-17{{cite web | url=https://minorplanetcenter.net/db_search/show_object?object_id=2017+SM2 | title=IAU Minor Planet Center }}|| {{mp|2017 SM|2}} || {{convert|0.00207|AU|km mi|abbr=on}} ||align="center"| 0.806 ||align="center"| 9.2–21 ||align="center"| 27.3{{cite web |url=http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2017SM2;cad=1#cad |title=JPL Small-Body Database Browser: (2017 SM2) |type=last observation: 2017-09-20}} ||
|- bgcolor="#ff9999"
| 2017-09-20 || 2017-09-21{{cite web | url=https://minorplanetcenter.net/db_search/show_object?object_id=2017+SZ32 | title=IAU Minor Planet Center }}|| {{mp|2017 SZ|32}} || {{convert|0.00138|AU|km mi|abbr=on}} ||align="center"| 0.535 ||align="center"| 3.8–8.4 ||align="center"| 29.3{{cite web |url=http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2017SZ32;cad=1#cad |title=JPL Small-Body Database Browser: (2017 SZ32) |type=last observation: 2017-09-22}} || align="center"|Yes
|- bgcolor="#ffff99"
| 2017-09-20 || 2017-09-20{{cite web | url=https://minorplanetcenter.net/db_search/show_object?object_id=2017+SR2 | title=IAU Minor Planet Center }}|| {{mp|2017 SR|2}} || {{convert|0.000623|AU|km mi|abbr=on}} ||align="center"| 0.243 ||align="center"| 5.1–11 ||align="center"| 28.6{{cite web |url=http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2017SR2;cad=1#cad |title=JPL Small-Body Database Browser: (2017 SR2) |type=last observation: 2017-09-20}} ||
|- bgcolor="#ff9999"
| 2017-09-24 || 2017-09-26{{cite web | url=https://minorplanetcenter.net/db_search/show_object?object_id=2017+SU17 | title=IAU Minor Planet Center }}|| {{mp|2017 SU|17}} || {{convert|0.00185|AU|km mi|abbr=on}} ||align="center"| 0.720 ||align="center"| 6.7–15 ||align="center"| 28.0{{cite web |url=http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2017SU17;cad=1#cad |title=JPL Small-Body Database Browser: (2017 SU17) |type=last observation: 2017-10-01}} || align="center"|
|- bgcolor="#ff9999"
| 2017-09-24 || 2017-09-25{{cite web | url=https://minorplanetcenter.net/db_search/show_object?object_id=2017+SS12 | title=IAU Minor Planet Center }}|| {{mp|2017 SS|12}} || {{convert|0.00172|AU|km mi|abbr=on}} ||align="center"| 0.670 ||align="center"| 10–23 ||align="center"| 27.0{{cite web |url=http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2017SS12;cad=1#cad |title=JPL Small-Body Database Browser: (2017 SS12) |type=last observation: 2017-09-26}} || align="center"|Yes
|- bgcolor="#ff9999"
| 2017-09-30 || 2017-10-01{{cite web | url=https://minorplanetcenter.net/db_search/show_object?object_id=2017+TQ2 | title=IAU Minor Planet Center }}|| {{mp|2017 TQ|2}} || {{convert|0.000691|AU|km mi|abbr=on}} ||align="center"| 0.269 ||align="center"| 3.6–7.9 ||align="center"| 29.4{{cite web |url=http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2017TQ2;cad=1#cad |title=JPL Small-Body Database Browser: (2017 TQ2) |type=last observation: 2017-10-02}} ||
|-
| 2017-10-02 || 2017-09-29{{cite web | url=https://minorplanetcenter.net/db_search/show_object?object_id=2017+SX17 | title=IAU Minor Planet Center }}|| {{mp|2017 SX|17}} || {{convert|0.000582|AU|km mi|abbr=on}} ||align="center"| 0.227 ||align="center"| 5.8–13 ||align="center"| 28.3{{cite web |url=http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2017SX17;cad=1#cad |title=JPL Small-Body Database Browser: (2017 SX17) |type=last observation: 2017-10-02}} ||
|- bgcolor="#ff9999"
| 2017-10-10 || 2017-10-14{{cite web | url=https://minorplanetcenter.net/db_search/show_object?object_id=2017+TF5 | title=IAU Minor Planet Center }}|| {{mp|2017 TF|5}} || {{convert|0.00188|AU|km mi|abbr=on}} ||align="center"| 0.730 ||align="center"| 21–47 ||align="center"| 25.5{{cite web |url=http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2017TF5;cad=1#cad |title=JPL Small-Body Database Browser: (2017 TF5) |type=last observation: 2017-10-16}} ||
|- bgcolor="#bbccff"
| 2017-10-12 || 2012-10-04{{cite web | url=https://minorplanetcenter.net/db_search/show_object?object_id=2017+TC4 | title=IAU Minor Planet Center }}|| {{mpl|2012 TC|4}} || {{convert|0.000335|AU|km mi|abbr=on}} ||align="center"| 0.130{{Efn|This will mark the first time an asteroid was observed passing less than 1 LD to the Earth on two different occasions.}} ||align="center"| 12–27 ||align="center"| 26.7{{cite web |url=http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2012TC4;cad=1#cad |title=JPL Small-Body Database Browser: (2012 TC4) |type=last observation: 2017-08-05}} ||
|- bgcolor="#ff9999"
| 2017-10-15 || 2017-10-16{{cite web | url=https://minorplanetcenter.net/db_search/show_object?object_id=2017+UF | title=IAU Minor Planet Center }}|| 2017 UF || {{convert|0.00255|AU|km mi|abbr=on}} ||align="center"| 0.991 ||align="center"| 7–16 ||align="center"| 27.9{{cite web |url=http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2017UF;cad=1#cad |title=JPL Small-Body Database Browser: (2017 UF) |type=last observation: 2017-10-17}} ||
|-
| 2017-10-16 || 2017-10-15{{cite web | url=https://minorplanetcenter.net/db_search/show_object?object_id=2017+TH5 | title=IAU Minor Planet Center }}|| {{mp|2017 TH|5}} || {{convert|0.000668|AU|km mi|abbr=on}} ||align="center"| 0.260 ||align="center"| 5.6–12 ||align="center"| 28.4{{cite web |url=http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2017TH5;cad=1#cad |title=JPL Small-Body Database Browser: (2017 TH5) |type=last observation: 2017-10-16}} ||
|- bgcolor="#ff9999"
| 2017-10-17 || 2017-10-19{{cite web | url=https://minorplanetcenter.net/db_search/show_object?object_id=2017+UR2 | title=IAU Minor Planet Center }}|| {{mp|2017 UR|2}} || {{convert|0.00213|AU|km mi|abbr=on}} ||align="center"| 0.829 ||align="center"| 7.7–17 ||align="center"| 27.7{{cite web |url=http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2017UR2;cad=1#cad |title=JPL Small-Body Database Browser: (2017 UR2) |type=last observation: 2017-10-21}} ||
|- bgcolor="#99ff99"
| 2017-10-19 || 2017-10-11{{cite web | url=https://minorplanetcenter.net/db_search/show_object?object_id=2017+TD6 | title=IAU Minor Planet Center }}|| {{mpl|2017 TD|6}} || {{convert|0.00128|AU|km mi|abbr=on}} ||align="center"| 0.497 ||align="center"| 9.7–22 ||align="center"| 27.2{{cite web |url=http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2017TD6;cad=1#cad |title=JPL Small-Body Database Browser: (2017 TD6) |type=last observation: 2017-10-17}} ||align="center"|Yes
|- bgcolor="#ff9999"
| 2017-10-20 || 2017-10-21{{cite web | url=https://minorplanetcenter.net/db_search/show_object?object_id=2017+UJ2 | title=IAU Minor Planet Center }}|| {{mp|2017 UJ|2}} || {{convert|0.000120|AU|km mi|abbr=on}} ||align="center"| 0.047 ||align="center"| 1.8–3.9 ||align="center"| 30.9{{cite web |url=http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2017UJ2;cad=1#cad |title=JPL Small-Body Database Browser: (2017 UJ2) |type=last observation: 2017-10-22}} ||
|- bgcolor="#ff9999"
| 2017-10-21 || 2017-10-25{{cite web | url=https://minorplanetcenter.net/db_search/show_object?object_id=2017+UA52 | title=IAU Minor Planet Center }}|| {{mp|2017 UA|52}} || {{convert|0.00131|AU|km mi|abbr=on}} ||align="center"| 0.511 ||align="center"| 5.3–12 ||align="center"| 28.5{{cite web |url=http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2017UA52;cad=1#cad |title=JPL Small-Body Database Browser: (2017 UA52) |type=last observation: 2017-10-26}} ||align="center"|Yes
|-
| 2017-10-28 || 2017-10-27{{cite web | url=https://minorplanetcenter.net/db_search/show_object?object_id=2017+UL6 | title=IAU Minor Planet Center }}|| {{mp|2017 UL|6}} || {{convert|0.000398|AU|km mi|abbr=on}} ||align="center"| 0.155 ||align="center"| 1.1–2.4 ||align="center"| 32.0{{cite web |url=http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2017UL6;cad=1#cad |title=JPL Small-Body Database Browser: (2017 UL6) |type=last observation: 2017-10-28}} ||
|-
| 2017-10-30 || 2017-10-29{{cite web | url=https://minorplanetcenter.net/db_search/show_object?object_id=2017+UK8 | title=IAU Minor Planet Center }}|| {{mp|2017 UK|8}} || {{convert|0.00151|AU|km mi|abbr=on}} ||align="center"| 0.588 ||align="center"| 6.1–14 ||align="center"| 28.2{{cite web |url=http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2017UK8;cad=1#cad |title=JPL Small-Body Database Browser: (2017 UK8) |type=last observation: 2017-10-30}} ||
|- bgcolor="#ff9999"
| 2017-11-04 || 2017-11-05{{cite web | url=https://minorplanetcenter.net/db_search/show_object?object_id=2017+VE | title=IAU Minor Planet Center }}|| 2017 VE || {{convert|0.00227|AU|km mi|abbr=on}} ||align="center"| 0.885 ||align="center"| 13–28 ||align="center"| 26.6{{cite web |url=http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2017VE;cad=1#cad |title=JPL Small-Body Database Browser: (2017 VE) |type=last observation: 2017-11-09}} ||
|- bgcolor="#ff9999"
| 2017-11-09 || 2017-11-10{{cite web | url=https://minorplanetcenter.net/db_search/show_object?object_id=2017+VL2 | title=IAU Minor Planet Center }}|| {{mpl|2017 VL|2}} || {{convert|0.000787|AU|km mi|abbr=on}} ||align="center"| 0.306 ||align="center"| 16–36 ||align="center"| 26.1{{cite web |url=http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2017VL2;cad=1#cad |title=JPL Small-Body Database Browser: (2017 VL2) |type=last observation: 2017-11-26}} ||
|- bgcolor="#ff9999"
| 2017-11-13 || 2017-11-15{{cite web | url=https://minorplanetcenter.net/db_search/show_object?object_id=2017+VF14 | title=IAU Minor Planet Center }}|| {{mp|2017 VF|14}} || {{convert|0.00205|AU|km mi|abbr=on}} ||align="center"| 0.796 ||align="center"| 5.3–12 ||align="center"| 28.5{{cite web |url=http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2017VF14;cad=1#cad |title=JPL Small-Body Database Browser: (2017 VF14) |type=last observation: 2017-11-19}} ||
|-
| 2017-11-21 || 2017-11-20{{Cite web|url=https://minorplanetcenter.net/db_search/show_object?object_id=2017+WW1|title = IAU Minor Planet Center}}|| {{mp|2017 WW|1}} || {{convert|0.000942|AU|km mi|abbr=on}} ||align="center"| 0.367 ||align="center"| 3.1–6.8 ||align="center"| 29.7{{cite web |url=http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2017WW1;cad=1#cad |title=JPL Small-Body Database Browser: (2017 WW1) |type=last observation: 2017-11-21}} ||
|- bgcolor="#ff9999"
| 2017-11-21 || 2017-11-22{{Cite web|url=https://minorplanetcenter.net/db_search/show_object?object_id=2017+WA14|title = IAU Minor Planet Center}}|| {{mp|2017 WA|14}} || {{convert|0.000633|AU|km mi|abbr=on}} ||align="center"| 0.246 ||align="center"| 8.8–20 ||align="center"| 27.4{{cite web |url=http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2017WA14;cad=1#cad |title=JPL Small-Body Database Browser: (2017 WA14) |type=last observation: 2017-11-26}} ||
|- bgcolor="#ffff99"
| 2017-11-26 || 2017-11-26{{Cite web|url=https://minorplanetcenter.net/db_search/show_object?object_id=2017+WE30|title = IAU Minor Planet Center}}|| {{mp|2017 WE|30}} || {{convert|0.000201|AU|km mi|abbr=on}} ||align="center"| 0.078 ||align="center"| 1.2–2.6 ||align="center"| 31.8{{cite web |url=http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2017WE30;cad=1#cad |title=JPL Small-Body Database Browser: (2017 WE30) |type=last observation: 2017-11-26}} ||
|-
| 2017-12-28 || 2017-12-25{{Cite web|url=https://minorplanetcenter.net/db_search/show_object?object_id=2017+YZ4|title = IAU Minor Planet Center}}|| {{mp|2017 YZ|4}} || {{convert|0.00149|AU|km mi|abbr=on}} ||align="center"| 0.582 ||align="center"| 6.4–14 ||align="center"| 28.1{{cite web |url=http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2017YZ4;cad=1#cad |title=JPL Small-Body Database Browser: (2017 YZ4) |type=last observation: 2017-12-28}} ||
|-
| 2017-12-30 || 2017-12-28{{Cite web|url=https://minorplanetcenter.net/db_search/show_object?object_id=2017+YE7|title = IAU Minor Planet Center}}|| {{mp|2017 YE|7}} || {{convert|0.00206|AU|km mi|abbr=on}} ||align="center"| 0.801 ||align="center"| 5.3–12 ||align="center"| 28.5{{cite web |url=http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2017YE7;cad=1#cad |title=JPL Small-Body Database Browser: (2017 YE7) |type=last observation: 2017-12-30}} ||
|}
In addition to the confirmed asteroids on the above list, which feature in the CNEOS close approach database, there have been well-observed unconfirmed or confirmed but poorly observed objects with a 50% or greater chance of passing within 1 LD of the Earth, which are listed separately below.
class="wikitable sortable"
! Date of ! Date ! Object ! Nominal geocentric ! Nominal ! data-sort-type="number"|Size (m) ! (H) ! Closer | |||||||
bgcolor="#ff9999"
|2017-10-13 | 2017-10-21{{cite web | url=http://www.birtwhistle.org.uk/NEOCPObjects2017.htm | title=NEOCP Objects in 2017 }} (Unconfirmed) | YT80190 | {{convert|0.000537|AU|km mi|abbr=on}} | align="center"|0.21{{Efn|distance error: 0.0000894 AU, approach range: 0.17 to 0.24 LD. The asteroid is unconfirmed and will likely never receive a provisional designation.}} | align="center"|2–6 | align="center"|30.4 | |
bgcolor="#ff9999"
|2017-10-22 | 2017-10-30 (Unconfirmed) | YU92F9B | {{convert|0.00121|AU|km mi|abbr=on}} | align="center"|0.47{{Efn|distance error: 0.000283 AU, approach range: 0.36 to 0.58 LD. The asteroid is unconfirmed and will likely never receive a provisional designation.}} | align="center"|3–10 | align="center"|29.2 | |
bgcolor="#ff9999"
|2017-10-22 | 2017-10-30 (Unconfirmed) | YU95BEF | {{convert|0.000130|AU|km mi|abbr=on}} | align="center"|0.051{{Efn|distance error: 0.0000611 AU, approach range: 0.027 to 0.074 LD. The asteroid is unconfirmed and will likely never receive a provisional designation.}} | align="center"|5–15 | align="center"|28.2 | |
bgcolor="#ff9999"
|2017-11-14 | 2017-11-20 (Unconfirmed) | P10ELNY | {{convert|0.000212|AU|km mi|abbr=on}} | align="center"|0.083{{Efn|distance error: 0.000121 AU, approach range: 0.035 to 0.13 LD. The asteroid is unconfirmed and will likely never receive a provisional designation.}} | align="center"|4–12 | align="center"|28.8 | |
bgcolor="#ff9999"
|2017-11-08 | 2017-11-16 (Unconfirmed) | A104Vqx | {{convert|0.000222|AU|km mi|abbr=on}} | align="center"|0.086{{Efn|distance error: 0.000163 AU, approach range: 0.023 to 0.15 LD. The asteroid is unconfirmed and will likely never receive a provisional designation.}} | align="center"|4–14 | align="center"|28.4 |
= Warning times by size =
This sub-section visualises the warning times of the close approaches listed in the table of confirmed close approaches, depending on the size of the asteroid. The sizes of the charts show the relative sizes of the asteroids to scale. For comparison, the approximate size of a person is also shown. This is based the absolute magnitude of each asteroid, an approximate measure of size based on brightness.
Absolute magnitude H ≥ 30 (smallest)
File:Silhouette of man standing and facing forward.svg (size of a person for comparison)
{{#invoke:Chart
|pie chart
|radius = 11
|slices =
( 1 : After closest approach : red )
( 3 : < 24 hours before : yellow )
( 1 : up to 7 days before : lightgrey )
( 0 : > one week before : green )
( 0 : > 7 weeks before : turquoise )
( 0 : > one year before : blue )
|percent = true
|hide group legends = true
}}
Absolute magnitude 30 > H ≥ 29
{{#invoke:Chart
|pie chart
|radius = 17
|slices =
( 4 : After closest approach : red )
( 1 : < 24 hours before : yellow )
( 7 : up to 7 days before : lightgrey )
( 0 : > one week before : green )
( 0 : > 7 weeks before : turquoise )
( 0 : > one year before : blue )
|percent = true
|hide group legends = true
}}
Absolute magnitude 29 > H ≥ 28
{{#invoke:Chart
|pie chart
|radius = 27
|slices =
( 3 : After closest approach : red )
( 2 : < 24 hours before : yellow )
( 12 : up to 7 days before : lightgrey )
( 0 : > one week before : green )
( 0 : > 7 weeks before : turquoise )
( 0 : > one year before : blue )
|percent = true
|hide group legends = true
}}
Absolute magnitude 28 > H ≥ 27
{{#invoke:Chart
|pie chart
|radius = 43
|slices =
( 8 : After closest approach : red )
( 0 : < 24 hours before : yellow )
( 2 : up to 7 days before : lightgrey )
( 1 : > one week before : green )
( 0 : > 7 weeks before : turquoise )
( 0 : > one year before : blue )
|percent = true
|hide group legends = true
}}
Absolute magnitude 27 > H ≥ 26
{{#invoke:Chart
|pie chart
|radius = 68
|slices =
( 2 : After closest approach : red )
( 0 : < 24 hours before : yellow )
( 2 : up to 7 days before : lightgrey )
( 0 : > one week before : green )
( 0 : > 7 weeks before : turquoise )
( 1 : > one year before : blue )
|percent = true
|hide group legends = true
}}
Absolute magnitude 26 > H ≥ 25
{{#invoke:Chart
|pie chart
|radius = 107
|slices =
( 3 : After closest approach : red )
( 0 : < 24 hours before : yellow )
( 0 : up to 7 days before : lightgrey )
( 0 : > one week before : green )
( 0 : > 7 weeks before : turquoise )
( 0 : > one year before : blue )
|percent = true
|hide group legends = true
}}
Absolute magnitude 25 > H (largest)
{{#invoke:Chart
|pie chart
|radius = 170
|slices =
( 2 : After closest approach : red )
( 0 : < 24 hours before : yellow )
( 0 : up to 7 days before : lightgrey )
( 0 : > one week before : green )
( 0 : > 7 weeks before : turquoise )
( 0 : > one year before : blue )
|percent = true
}}
= Notes =
{{Notelist}}
Timeline of close approaches less than one lunar distance from the Moon in 2017
The number of asteroids listed here are significantly less than those of asteroids that approach Earth for several reasons. Asteroids that approach Earth not only move faster, but are brighter and are easier to detect with modern surveys because:
- Asteroids that come closer to Earth are a higher priority to confirm, and only confirmed asteroids are listed with a lunocentric approach distance.
- Those that closely approach the Moon are frequently lost in its glare, making them harder to confirm. They are similarly hard to discover during the new moon, when the Moon is too close to the Sun to detect asteroids while they are near the Moon.
These factors severely limit the amount of Moon-approaching asteroids, to a level many times lower than the asteroids detected passing as close to Earth.
class="wikitable sortable"
! Date of ! Object ! Nominal lunocentric ! Nominal lunocentric ! data-sort-type="number"|Size (m) ! (H) ! Approach | ||||||
2017-01-25 | {{mp|2017 BA|7}} | {{convert|0.00187|AU|km mi|abbr=on}} | align="center"|0.73 | align="center"|5–16 | align="center"|28.1{{cite web |url=http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2017BA7;cad=1#cad |title=JPL Small-Body Database Browser: (2017 BA7) |type=last observation: 2017-01-29}} | align="center"|1.12 |
2017-01-25 | 2017 BX | {{convert|0.00209|AU|km mi|abbr=on}} | align="center"|0.81 | align="center"|5–18 | align="center"|28.0 | align="center"|0.69 |
2017-01-30 | {{mp|2017 BH|30}} | {{convert|0.00187|AU|km mi|abbr=on}} | align="center"|0.73 | align="center"|4–12 | align="center"|28.8 | align="center"|0.13 |
2017-02-03 | {{mp|2017 BS|32}} | {{convert|0.00193|AU|km mi|abbr=on}} | align="center"|0.75 | align="center"|7–24 | align="center"|27.3 | align="center"|0.42 |
2017-02-24 | {{mp|2017 DG|16}} | {{convert|0.000555|AU|km mi|abbr=on}} | align="center"|0.22{{Efn|This is the closest any known asteroid has passed to the Moon in nearly three years, after {{mp|2014 GY|44}} passed 0.097 LD from the Moon in March 2014.}} | align="center"|3–9 | align="center"|29.3 | align="center"|0.36 |
2017-02-25 | {{mp|2017 DR|34}} | {{convert|0.00179|AU|km mi|abbr=on}} | align="center"|0.70 | align="center"|3–11 | align="center"|29.1 | align="center"|0.58 |
2017-03-02 | 2017 EA | {{convert|0.00224|AU|km mi|abbr=on}} | align="center"|0.87 | align="center"|1–5 | align="center"|30.8 | align="center"|0.054 |
2017-03-17 | {{mp|2017 FD|3}} | {{convert|0.00236|AU|km mi|abbr=on}} | align="center"|0.92 | align="center"|6–20 | align="center"|27.7 | align="center"|0.47 |
2017-03-17 | {{mp|2017 FW|158}} | {{convert|0.00104|AU|km mi|abbr=on}} | align="center"|0.40 | align="center"|5–14 | align="center"|28.4 | align="center"|0.32 |
2017-04-04 | 2017 GM | {{convert|0.00227|AU|km mi|abbr=on}} | align="center"|0.88 | align="center"|2–7 | align="center"|29.9 | align="center"|0.042 |
2017-04-21 | {{mp|2017 HG|4}} | {{convert|0.00177|AU|km mi|abbr=on}} | align="center"|0.69 | align="center"|6–21 | align="center"|27.6 | align="center"|0.61 |
2017-04-24 | {{mp|2017 HV|2}} | {{convert|0.00230|AU|km mi|abbr=on}} | align="center"|0.90 | align="center"|3–12 | align="center"|28.9 | align="center"|0.33 |
2017-05-02 | 2017 JA | {{convert|0.00251|AU|km mi|abbr=on}} | align="center"|0.98 | align="center"|3–13 | align="center"|28.9 | align="center"|0.26 |
2017-05-02 | {{mp|2017 JB|2}} | {{convert|0.00188|AU|km mi|abbr=on}} | align="center"|0.73 | align="center"|3–11 | align="center"|29.0 | align="center"|0.14 |
2017-05-03 | {{mp|2017 JQ|1}} | {{convert|0.00247|AU|km mi|abbr=on}} | align="center"|0.96 | align="center"|3–9 | align="center"|29.4 | align="center"|0.44 |
2017-05-31 | {{mp|2017 KW|31}} | {{convert|0.00114|AU|km mi|abbr=on}} | align="center"|0.45 | align="center"|10–36 | align="center"|26.5{{cite web |url=http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2017KW31;cad=1#cad |title=JPL Small-Body Database Browser: (2017 KW31) |type=last observation: 2017-05-31}} | align="center"|1.23 |
2017-07-21 | {{mpl|2017 OO|1}} | {{convert|0.00236|AU|km mi|abbr=on}} | align="center"|0.92 | align="center"|25–90 | align="center"|24.5 | align="center"|0.30 |
2017-08-14 | {{mpl|2017 QP|1}} | {{convert|0.00230|AU|km mi|abbr=on}} | align="center"|0.90 | align="center"|31–91 | align="center"|24.3 | align="center"|0.16 |
2017-08-21 | {{mp|2017 QN|2}} | {{convert|0.00176|AU|km mi|abbr=on}} | align="center"|0.69 | align="center"|5–22 | align="center"|27.9 | align="center"|0.56 |
2017-08-26 | {{mp|2017 QQ|17}} | {{convert|0.00242|AU|km mi|abbr=on}} | align="center"|0.94 | align="center"|4–17 | align="center"|28.3{{cite web |url=http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2017QQ17;cad=1#cad |title=JPL Small-Body Database Browser: (2017 QQ17) |type=last observation: 2017-08-26}} | align="center"|1.02 |
2017-09-03 | {{mp|2017 QB|35}} | {{convert|0.00245|AU|km mi|abbr=on}} | align="center"|0.95 | align="center"|3–9 | align="center"|29.3 | align="center"|0.93 |
2017-09-16 | {{mp|2017 RW|17}} | {{convert|0.00175|AU|km mi|abbr=on}} | align="center"|0.68 | align="center"|2–7 | align="center"|29.8{{cite web |url=http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2017RW17;cad=1#cad |title=JPL Small-Body Database Browser: (2017 RW17) |type=last observation: 2017-09-15}} | align="center"|1.08 |
2017-09-20 | {{mp|2017 SZ|32}} | {{convert|0.00129|AU|km mi|abbr=on}} | align="center"|0.50 | align="center"|3–9 | align="center"|29.2 | align="center"|0.53 |
2017-09-20 | {{mp|2017 SM|2}} | {{Convert|0.00213|AU|km mi|abbr=on}} | align="center"|0.83 | align="center"|6–26 | align="center"|27.3 | align="center"|0.81 |
2017-09-24 | {{mp|2017 SS|12}} | {{convert|0.000320|AU|km mi|abbr=on}} | align="center"|0.12 | align="center"|8–27 | align="center"|27.0 | align="center"|0.67 |
2017-09-30 | {{mp|2017 TQ|2}} | {{convert|0.00221|AU|km mi|abbr=on}} | align="center"|0.86 | align="center"|3–8 | align="center"|29.4 | align="center"|0.27 |
2017-10-02 | {{mp|2017 SX|17}} | {{convert|0.00174|AU|km mi|abbr=on}} | align="center"|0.68 | align="center"|4–16 | align="center"|28.1 | align="center"|0.22 |
2017-10-12 | {{mpl|2012 TC|4}} | {{convert|0.00186|AU|km mi|abbr=on}} | align="center"|0.72 | align="center"|10–31 | align="center"|26.7 | align="center"|0.23 |
2017-10-13 | YT80190 | {{convert|0.00208|AU|km mi|abbr=on}} | align="center"|0.81{{Efn|distance error: 0.00000802 AU, approach range: 0.807 to 0.814 LD. The asteroid is unconfirmed and will likely never receive a provisional designation.}} | align="center"|2–6 | align="center"|30.4 | align="center"|0.21 |
2017-10-17 | {{mp|2017 TH|5}} | {{convert|0.00142|AU|km mi|abbr=on}} | align="center"|0.55 | align="center"|4–18 | align="center"|28.2 | align="center"|0.26 |
2017-10-20 | {{mp|2017 UJ|2}} | {{convert|0.00166|AU|km mi|abbr=on}} | align="center"|0.65 | align="center"|1–5 | align="center"|30.8 | align="center"|0.047 |
2017-10-20 | {{mp|2017 TD|6}} | {{convert|0.000756|AU|km mi|abbr=on}} | align="center"|0.29 | align="center"|7–28 | align="center"|27.2 | align="center"|0.50 |
2017-10-20 | {{mp|2017 UA|52}} | {{convert|0.000288|AU|km mi|abbr=on}} | align="center"|0.11{{Efn|This is the closest any known asteroid has passed to the Moon in nearly three years (even closer than {{mp|2017 DG|16}}) after {{mp|2014 GY|44}} passed 0.097 LD from the Moon in March 2014.}} | align="center"|4–15 | align="center"|28.3 | align="center"|0.51 |
2017-10-22 | YU95BEF | {{convert|0.000481|AU|km mi|abbr=on}} | align="center"|0.19{{Efn|distance error: 0.00000171 AU, approach range: 0.181 to 0.194 LD. The asteroid is unconfirmed and will likely never receive a provisional designation.}} | align="center"|5–15 | align="center"|28.2 | align="center"|0.051 |
2017-10-24 | {{mp|2017 UK|3}} | {{convert|0.00207|AU|km mi|abbr=on}} | align="center"|0.80 | align="center"|7–28 | align="center"|27.2{{cite web |url=http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2017UK3;cad=1#cad |title=JPL Small-Body Database Browser: (2017 UK3) |type=last observation: 2017-10-23}} | align="center"|1.38 |
2017-11-09 | {{mp|2017 VL|2}} | {{convert|0.00254|AU|km mi|abbr=on}} | align="center"|0.990 | align="center"|13–42 | align="center"|26.1 | align="center"|0.31 |
2017-11-09 | A104Vqx | {{convert|0.00204|AU|km mi|abbr=on}} | align="center"|0.80{{Efn|distance error: 0.0000188 AU, approach range: 0.788 to 0.803 LD. The asteroid is unconfirmed and will likely never receive a provisional designation.}} | align="center"|4–14 | align="center"|28.4 | align="center"|0.086 |
2017-11-13 | {{mp|2017 VF|14}} | {{convert|0.00243|AU|km mi|abbr=on}} | align="center"|0.94 | align="center"|4–14 | align="center"|28.5 | align="center"|0.80 |
2017-11-14 | P10ELNY | {{convert|0.00196|AU|km mi|abbr=on}} | align="center"|0.76{{Efn|distance error: 0.000177 AU, approach range: 0.69 to 0.83 LD. The asteroid is unconfirmed and will likely never receive a provisional designation.}} | align="center"|4–12 | align="center"|28.8 | align="center"|0.083 |
2017-12-18 | {{mp|2017 YJ|1}} | {{convert|0.00142|AU|km mi|abbr=on}} | align="center"|0.55 | align="center"|6–26 | align="center"|27.5{{cite web |url=http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2017YJ1;cad=1#cad |title=JPL Small-Body Database Browser: (2017 YJ1) |type=last observation: 2017-12-31}} | align="center"|1.044 |
2017-12-28 | {{mp|2017 YZ|4}} | {{convert|0.00175|AU|km mi|abbr=on}} | align="center"|0.68 | align="center"|4–18 | align="center"|28.2 | align="center"|0.58 |
= Notes =
{{Notelist}}
Additional examples
File:2017 BQ6 radar rotation.gif
File:PIA21597 - New Radar Images of Asteroid 2014 JO25 (cropped).gif
An example list of near-Earth asteroids that passed or will pass more than 1 lunar distance (384,400 km or 0.00256 AU) from Earth in 2017.
class="wikitable sortable"
! Object | data-sort-type="number" | Size (meters) | data-sort-type="number" | Lunar distances | data-sort-type="date" | Date |
{{mp|2017 AP|19}} | 65 | 3.34 | 6 January 2017 |
{{mp|2017 BJ|30}}{{Cite sbdb |title=(2017 BJ30) |id=3767159 |orbit=yes }} | 16 | 1.03 | 31 January 2017 |
{{mpl|2017 BQ|6}} | 186 | 6.57 | 7 February 2017 |
{{mp|2017 DZ|37}}{{Cite sbdb |title=(2017 DZ37) |id=3770154 |orbit=yes }} | 7 | 1.005 | 23 February 2017 |
{{mp|2017 DV|36}}{{Cite sbdb |title=(2017 DV36) |id=3769919 |orbit=yes }} | 9 | 1.02 | 27 February 2017 |
{{mp|1998 SL|36}}{{Cite sbdb |title=(1998 SL36) |id=3014117 |orbit=yes }} | 313 | 8.34 | 16 March 2017 |
{{mp|2017 FT|102}}{{Cite sbdb |title=(2017 FT102) |id=3773057 |orbit=yes }} | 4 | 1.05 1.04 moon | 3 April 2017 |
{{mpl|2014 JO|25}}{{Cite sbdb |title=(2014 JO25) |id=3670721 |orbit=yes }} | 823 | 4.57 | 19 April 2017 |
{{mp|(418094) 2007 WV|4}}{{Cite sbdb |title=418094 (2007 WV4) |id=2418094 |orbit=yes }} | 890 | 7.96 | 1 June 2017 |
{{mp|2017 KQ|27}}{{Cite sbdb |title=(2017 KQ27) |id=3775038 |orbit=yes }} | 30 | 1.02 1.34 moon | 6 June 2017 |
2017 MF{{Cite sbdb |title=(2017 MF) |id=3775253 |orbit=yes }} | 20 | 1.21 moon | 19 June 2017 |
{{mp|2017 NT|5}}{{Cite sbdb |title=(2017 NT5) |id=3776550 |orbit=yes }} | 110 | 1.11 1.27 moon | 14 July 2017 |
{{mp|2006 SR|131}}{{Cite sbdb |title=(2006 SR131) |id=3345302 |orbit=yes }} | 8 | 0.32 and 11 {{Clarify|date=March 2020|reason=What does this mean?}} | data-sort-value="17 September 2017" | 17–28 September 2017 |
{{mp|(496817) 1989 VB}}{{Cite sbdb |title=496817 (1989 VB) |id=2496817 |orbit=yes }} | 394 | 7.88 | 29 September 2017 |
YT83F29 {{Citation needed|date=March 2020|reason=Not in SBDB}} | 4 | 2.6 0.73 moon | 14 October 2017 |
{{mp|(171576) 1999 VP|11}}{{Cite sbdb |title=171576 (1999 VP11) |id=2171576 |orbit=yes }} | 685 | 5.77 | 22 October 2017 |
(444584) 2006 UK{{Cite sbdb |title=444584 (2006 UK) |id=2444584 |orbit=yes }} | 313 | 8.66 | 17 November 2017 |
Statistics
{{Bar graph
| title = Discoveries by month
| float = left
| data_max = 15
| bar_width = 15
| width_units = em
| label_type = month
| data_type = <1 LD
| label1 = January
| data1 = 3
| label2 = February
| data2 = 3
| label3 = March
| data3 = 9
| label4 = April
| data4 = 5
| label5 = May
| data5 = 3
| label6 = June
| data6 = 0
| label7 = July
| data7 = 1
| label8 = August
| data8 = 2
| label9 = September
| data9 = 5
| label10 = October
| data10 = 14
| label11 = November
| data11 = 8
| label12 = December
| data12 = 2
| col2_data_type= <5 LD
| col2_data_max = 60
| col2_data1 = 17
| col2_data2 = 27
| col2_data3 = 34
| col2_data4 = 28
| col2_data5 = 14
| col2_data6 = 10
| col2_data7 = 11
| col2_data8 = 17
| col2_data9 = 32
| col2_data10 = 52
| col2_data11 = 29
| col2_data12 = 28
}}
{{Bar graph
| title = Discoveries by size
| float = left
| data_max = 20
| bar_width = 15
| width_units = em
| label_type = Abs. mag
| data_type = <1 LD
| label1 = H <20
| data1 = 0
| label2 = <21
| data2 = 0
| label3 = <22
| data3 = 0
| label4 = <23
| data4 = 0
| label5 = <24
| data5 = 0
| label6 = <25
| data6 = 3
| label7 = <26
| data7 = 2
| label8 = <27
| data8 = 4
| label9 = <28
| data9 = 11
| label10 = <29
| data10 = 18
| label11 = <30
| data11 = 13
| label12 = <31
| data12 = 4
| label13 = <32
| data13 = 1
| label14 = <33
| data14 = 1
| col2_data_type= <5 LD
| col2_data_max = 100
| col2_data1 = 1
| col2_data2 = 0
| col2_data3 =1
| col2_data4 =3
| col2_data5 =7
| col2_data6 =19
| col2_data7 =40
| col2_data8 =74
| col2_data9 =72
| col2_data10 =57
| col2_data11 =19
| col2_data12 =5
| col2_data13 =1
| col2_data14 =1
}}
{{Bar graph
| title = Discoveries by survey
| float = left
| data_max = 30
| bar_width = 15
| width_units = em
| label_type = Survey
| data_type = <1 LD
| label1 = 408{{Snd}} Mount Nyukasa Station
| data1 = 0
| label2 = 703{{Snd}} Catalina Sky Survey
| data2 = 12
| label3 = 704{{Snd}} Lincoln Laboratory ETS
| data3 = 0
| label4 = C51{{Snd}} WISE
| data4 = 0
| label5 = F51{{Snd}} Pan-STARRS 1
| data5 = 10
| label6 = G45{{Snd}} Space Surveillance Telescope
| data6 = 0
| label7 = G96{{Snd}} Mt. Lemmon Survey
| data7 = 28
| label8 = I52{{Snd}} Steward Observatory, Mount Lemmon
| data8 = 0
| label9 = J04{{Snd}} ESA OGS
| data9 = 0
| label10 = K88{{Snd}} GINOP-KHK
| data10 = 0
| label11 = T05{{Snd}} ATLAS{{Snd}} Haleakala
| data11 = 2
| label12 = T08{{Snd}} ATLAS{{Snd}} Mauna Loa
| data12 = 5
| label13 = Y00{{Snd}} SONEAR
| data13 = 0
| col2_data_type= <5 LD
| col2_data_max = 160
| col2_data1 = 1
| col2_data2 = 52
| col2_data3 = 1
| col2_data4 = 1
| col2_data5 = 56
| col2_data6 = 3
| col2_data7 = 157
| col2_data8 = 1
| col2_data9 = 1
| col2_data10 = 1
| col2_data11 = 11
| col2_data12 = 15
| col2_data13 = 2
}}
{{clear}}
Virtual impactors
List of asteroids with a Palermo Technical Impact Hazard Scale greater than −6 that are listed on the Sentry Risk Table because they have short observation arcs with poorly constrained orbits and have a chance of impacting Earth in 2017. Given a short observation arc, many different orbits fit the observed data. {{mp|2010 XB|73}} could have approached Earth around May 2017 or could have been 9 AU from Earth on the way to a close approach with Saturn in 2018. A Palermo rating of −4 indicates an event that is 10,000 times less likely than the background hazard level of Earth impacts, which is defined as the average risk posed by objects of the same size or larger over the years until the date of the potential impact.
class="wikitable sortable"
! Date ! Object ! Estimated ! Obs ! Impact ! JPL Horizons ! NEODyS | |||||
style="background:#cccccc;" | {{mpl|2010 GZ|60}} | align="center"|2,000{{Efn|name=2010GZ60note|1=Discovered and only observed by WISE, an infrared telescope, so no apparent magnitude, and therefore estimated size was provided. As such, the size is only a rough estimate. Observation arc is only 1.3 days. [http://www.minorplanetcenter.net/db_search/show_object?object_id=2010+GZ60 Eccentricity is assumed] and the object is lost.}} | align="center"|1.3 | 830,000,000 | align="center" |
1.83 | {{convert|0.4|AU|km mi|abbr=on}} | Not listed | |||
style="background:#cccccc;" | {{mp|2010 XB|73}} | align="center"|110 | align="center"|1.1 | 120,000,000 | align="center" |
4.47 | {{convert|1.6|AU|km mi|abbr=on}} | {{convert|9.0|AU|km mi|abbr=on}}{{cite web |url=https://newton.spacedys.com/neodys/index.php?pc=1.1.3.1&n=2010XB73&oc=500&y0=2011&m0=1&d0=1&h0=0&mi0=0&y1=2018&m1=1&d1=1&h1=0&mi1=0&ti=90&tiu=days |title=NEODyS-2 Ephemerides for 2010XB73}} [https://newton.spacedys.com/neodys/index.php?pc=1.1.8&n=2010XB73 (Close Approaches)] | |||
style="background:#cccccc;" | {{mpl|2015 ME|131}} | align="center"|500 | align="center"|1.8 | 420,000,000 | align="center" |
3.41 | {{convert|0.4|AU|km mi|abbr=on}} | {{convert|0.4|AU|km mi|abbr=on}} | |||
style="background:#cccccc;" | {{mp|2015 HV|182}} | align="center"|157 | align="center"|0.9 | 7,700,000,000 | align="center" |
5.78 | {{convert|2.3|AU|km mi|abbr=on}} | {{convert|2.3|AU|km mi|abbr=on}} | |||
style="background:#cccccc;" | {{mp|2008 VS|4}} | align="center"|45 | align="center"|0.083 | 100,000,000 | align="center" |
5.50 | {{convert|4.6|AU|km mi|abbr=on}} | {{convert|3.9|AU|km mi|abbr=on}} | |||
style="background:#cccccc;" | 2007 YM | align="center"|20 | align="center"|0.13 | 2,000,000 | align="center" |
5.21 | {{convert|5.1|AU|km mi|abbr=on}} | {{convert|5.1|AU|km mi|abbr=on}} | |||
style="background:#cccccc;" | {{mp|2010 GZ|60}} | align="center"|2,000{{Efn|name=2010GZ60note}} | align="center"|1.3 | 10,000,000,000 | align="center" |
3.62 | {{convert|1.0|AU|km mi|abbr=on}} | Not listed | |||
style="background:#cccccc;" | {{mp|2005 TM|173}} | align="center"|53 | align="center"|1.9 | 230,000,000 | align="center" |
5.98 | {{convert|5.7|AU|km mi|abbr=on}} | {{convert|5.7|AU|km mi|abbr=on}} | |||
style="background:#cccccc;" | {{mp|2010 GZ|60}} | align="center"|2,000{{Efn|name=2010GZ60note}} | align="center"|1.3 | 83,000,000 | align="center" |
1.97 | {{convert|1.2|AU|km mi|abbr=on}} | Not listed |
=Notes=
{{Notelist}}
See also
- List of asteroid close approaches to Earth
- List of asteroid close approaches to Earth in 2016
- List of asteroid close approaches to Earth in 2018
- List of bolides (asteroids and meteoroids that impacted Earth)
Notes
References
{{Reflist}}
External links
- [https://web.archive.org/web/20170205095947/http://neo.jpl.nasa.gov/cgi-bin/neo_ca?type=NEO&hmax=all&sort=date&sdir=DESC&tlim=current&dmax=5LD&max_rows=100&action=Display+Table&show_table=1 Near-Earth object close approaches ±30 days within 5 LD] (JPL)
- [http://neo.ssa.esa.int/close-approaches Upcoming close approaches to Earth] (ESA)
- [http://www.brera.mi.astro.it/sormano/teca.html Table of Asteroids Next Closest Approaches to the Earth] (Sormano Observatory)
{{2017 in space}}